Your developing world school needs almost-free machine tools? Your developing world factory needs unavailable spare parts? You need a complex part that is too expensive to have made? Need to bootstrap a factory but only have a few bucks?
Your developing world school needs almost-free machine tools?
Your developing world factory needs unavailable spare parts?
You need a complex part that is too expensive to have made?
Need to bootstrap a factory but only have a few bucks?
You just need a metalworking lathe. Metalworking lathes are necessary to the production of almost everything…but traditional ones are very expensive.
In 1915, special lathes made from concrete were developed to quickly and cheaply produce millions of cannon shells needed for World War I. Lucien Yeomans, the inventor, won the highest engineering award in the United States for it but sadly the technique was almost forgotten after the war.
We re-discovered it as a way to quickly make inexpensive but accurate machine tools for use in developing countries and in trade schools and shops everywhere. We made modern construction practical by replacing the original poured, non shrinking metal with cement grout.
This project is all about making machine tools accessible to the developing world with a concrete lathe that can be easily and inexpensively built. The machine tools that fueled the Industrial Revolution in the Western World have become too expensive to be used in the places that most need small industries now.
This concrete lathe design can change that. Based on a proven early20th-century design, it can be made in any size. And, the same techniques can be used to make many different kinds of machine tools.
It can be built by a good mechanic using scrap, steel bar and concrete using only common mechanic’s tools, a drill and a few small welds. It is easily converted to drilling and horizontal and end milling. Lathe cost is determined by the size of the machine you build and the kinds of good junk you have available.
Note: be sure to read the Essential Documents page before you dive into building a Concrete Lathe on your own.
After you’ve read the Essential Documents page, check out the instructions to the right. More information (including technical drawings) available at The Concrete Lathe Wiki.